Id say 5 Yellow labs, 3 Acei, 4 Socolofi... and you have to be more specific with "jalo".... Jalo is a collection point... "jalo reef"... there for there are more than 1 type of African Cichlid that has that tag... but I would say 3 and add 2 synodontis to clean up the bottom they make less waste than your plecosthemus
(EDIT)... ok Im guessing youre referring to the Cynotilapia afra jalo reef... the most common species collected there (did some research)... so yeah... 3 would be good
Make sure youre running high filtration, overstocking is fine as long as you have the tank prepared to handle the load
Good luck and very nice choices by the way